@if (loading) {
  <div class="loading-inner">
    <mat-spinner diameter="50" />
  </div>
}
<iframe
  [style]="{ visibility: loading ? 'hidden' : 'visible' }"
  [width]="content.width || '100%'"
  [class]="content.classes"
  height="{{ content.height || '100%' }}"
  [src]="url | safeUrl"
  [title]="content.title"
  [id]="content.id"
  frameborder="0"
  [name]="content.name || 'xinshi'"
></iframe>
